Drilling tool



FIG. 1 is a front view of a first embodiment of a drilling tool showing the new design;

FIG. 2 is a top view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a front view of a second embodiment of a drilling tool showing the new design; and,

FIG. 5 is a front view of a third embodiment of part of a drilling tool showing the new design.

The broken lines shown in the drawings are for the purpose of illustrating portions of the drilling tool and form no part of the claimed design. Top views of the second and third embodiments are omitted because those views are identical to the top view of the first embodiment shown in FIG. 2. Bottom views of the second and third embodiments are omitted because those views are identical to the bottom view of the first embodiment shown in FIG. 3. A left side view, a right side view, and a rear view of each embodiment are omitted because those views are identical to the front view of each respective embodiment. 

CLAIM The ornamental design for a drilling tool, as shown and described. 